Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba466356be60d95e…

MALICIOUS

PDF

88.3 KB Created: 2021-03-05 11:06:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 9f1b060ad7b5c756113eae8fb50822da SHA-1: e28c60524951ee99120b15c04fab603e3993d39d SHA-256: ba466356be60d95efd5df131d32ce3c41be60c9a83cdba424ea85b1fe4e7c5dd
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous external links, with a significant number pointing to PDF files, suggesting a link farm or redirection mechanism. The primary URL, 'https://jottigo.ru/wb?keyword=evermore%20beauty%20and%20the%20beast%20piano%20sheet%20music', indicates a lure related to sheet music. The heuristic 'PDF_SEO_LINK_FARM' confirms the presence of a large number of external links, and ClamAV detection as 'Pdf.Phishing.Trojan' strongly indicates malicious intent. No scripts were extracted, but the extensive use of external URLs points towards a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://jottigo.ru/wb?keyword=evermore%20beauty%20and%20the%20beast%20piano%20sheet%20music PDF link annotation
    • https://cdn.sqhk.co/moserusoba/jhNQXic/vivam.pdfIn PDF document text
    • http://lefuvaguvupawax.iblogger.org/work_citation_mla_format_example.pdfIn PDF document text
    • http://ramuwazezu.22web.org/wavemobirumixojenonefi.pdfIn PDF document text
    • https://cdn.sqhk.co/vedanoderifu/hfgjGb4/virus_symptoms_in_children.pdfIn PDF document text
    • https://cdn.sqhk.co/bujasugawo/kbij1he/spotlight_x_room_escape_chapter_2_level_1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://wujarid.epizy.com/zupufilugoxebetixukuzom.pdfIn PDF document text
    • https://s3.amazonaws.com/dudujopixejikug/kumutidapadikuboxobi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/64deebbd-1476-41d6-8b1c-0f497a9bc788/pioneer_vsx-821_av_receiver.pdfIn PDF document text
    • https://s3.amazonaws.com/vufuzewasi/wenibotifakixafidizuzoru.pdfIn PDF document text
    • https://s3.amazonaws.com/xunilukegez/kenmore_washer_70_series_parts_diagram.pdfIn PDF document text
    • http://xarififipevi.epizy.com/rirodilajalota.pdfIn PDF document text
    • https://s3.amazonaws.com/mexijegedakol/addendum_to_lease_agreement_template_florida.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxexi/7365443433.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c9f426ba-7966-49bc-9667-0208fe3d7198/honda_generator_eu2000i_remote_start.pdfIn PDF document text
    • https://f9c81679-ddb1-4746-ab40-32673edc426c.filesusr.com/ugd/2eff39_81387d2fc1c2461392e9b96cfff33f70.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xazarujokemus/gratis_beterschapskaart_en.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/074eacc0-687e-4978-af79-f48cb5cbab82/82474511218.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/652f9e3e-9628-440a-b947-945cd867ae45/what_is_the_best_bible_app.pdfIn PDF document text
    • https://737c154f-ca75-4484-807d-9d5c19d76377.filesusr.com/ugd/7e84b7_c431cb4a249a432aa5c114177f6a9ff3.pdf?index=trueIn PDF document text
    • http://sipaduterofa.rf.gd/pexasesuwufite.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a9ce9e61-9b30-490f-89f3-80277167a008/wapavobapolobure.pdfIn PDF document text
    • https://9eaa565e-fb97-40b4-b096-d6760803f699.filesusr.com/ugd/55e2c6_67a5cacf6d0b4efea443d7d6ae02973f.pdf?index=trueIn PDF document text
    • https://3e80c8bf-0031-4ca1-bfa9-4484641fefed.filesusr.com/ugd/08103e_65f517a11efc4bb294ea661e1c3e0230.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jedaxopopuko/orange_county_ny_pistol_permit_reference_form.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f78e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF78E 5424 bytes
SHA-256: 6c2a2184c3804c3cb737f488b59eb448e73237b63d0d2c231213ab9340c7df8d
font_01_sfnt_off000109d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109D0 11096 bytes
SHA-256: e0d125a15abf1807db722ceffbaacdcaa1b5551890dabeea62da6bf4d10680c1
font_02_sfnt_off00012f69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F69 16100 bytes
SHA-256: dbe3dd64dc066f428802739f18684eaf08c446fcda8cbe88d420f1ef9ee6b29b
font_03_sfnt_off00014437.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14437 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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